L2TP - Layer Two Tunnelling Protocol

pcapkit.protocols.link.l2tp contains L2TP only, which implements extractor for Layer Two Tunnelling Protocol (L2TP) *, whose structure is described as below:

Octets	Bits	Name	Description
0	0	l2tp.flags	Flags and Version Info
0	0	l2tp.flags.type	Type (control / data)
0	1	l2tp.flags.len	Length
0	2		Reserved (must be zero x00)
0	4	l2tp.flags.seq	Sequence
0	5		Reserved (must be zero x00)
0	6	l2tp.flags.offset	Offset
0	7	l2tp.flags.prio	Priority
1	8		Reserved (must be zero x00)
1	12	l2tp.ver	Version (2)
2	16	l2tp.length	Length (optional by len)
4	32	l2tp.tunnelid	Tunnel ID
6	48	l2tp.sessionid	Session ID
8	64	l2tp.ns	Sequence Number (optional by seq)
10	80	l2tp.nr	Next Sequence Number (optional by seq)
12	96	l2tp.offset	Offset Size (optional by offset)

Data Structures

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*

https://en.wikipedia.org/wiki/Layer_2_Tunneling_Protocol